package com.smalldragon;

import java.util.concurrent.Callable;
import java.util.concurrent.Future;
import java.util.concurrent.FutureTask;

public class Test1 {
	
	
	
	static public void main(String [] args) {
		
		
		float f1 = 1.200003f;
		float f2 = 2.900004f;
		
		float f3 = f1 + f2;
		
		System.out.println(f3);
		
		System.out.println((double) 4.1);
		
		
		Callable cable;
		
		
		Runnable rable;
		
		Future future;
		
		FutureTask fTask;
		
		
	}
	
	
	

}
